Safety 1st Interior & Exterior Door Reinforcer, 2-2/8" x 1-3/4" x 2-1/8", Solid Brass LOCK BACKSET: 2-3/8" DOOR THICKNESS: 1-3/4" BORE DIAMETER: 2-1/8" Polished solid brass; Gold color Increases door strength Helps prevent forced entry Easily installed with hand tools